CN106876084A - A kind of NFC modules antifreeze plate and its manufacture method - Google Patents
A kind of NFC modules antifreeze plate and its manufacture method Download PDFInfo
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- CN106876084A CN106876084A CN201710205357.7A CN201710205357A CN106876084A CN 106876084 A CN106876084 A CN 106876084A CN 201710205357 A CN201710205357 A CN 201710205357A CN 106876084 A CN106876084 A CN 106876084A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0075—Magnetic shielding materials
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Abstract
The invention discloses a kind of NFC modules antifreeze plate, particularly, including magnetic flakes layer and heat dissipating layer；Magnetic flakes layer includes several magnetic flakes being made up of metal soft magnetic material, and the metal soft magnetic material is high-permeability material；Adjacent magnetic thin slice is bonded in the same direction by binding agent；The heat dissipating layer is made up of heat sink material, and the side of the heat dissipating layer is bonded by binding agent with magnetic flakes layer, and opposite side is provided with the diaphragm for playing insulation protection.The invention also discloses the manufacture method for manufacturing above-mentioned NFC modules antifreeze plate.It is scattered good that the present invention has the advantages that simple structure, excellent performance, antifreeze plate magnetic conductivity and quality factor are significantly improved, production process is simple and easy, guarantee antifreeze plate in use can be good.
Description
Technical field
The present invention relates to antifreeze plate, more particularly, to NFC modules antifreeze plate and manufacture method.
Background technology
NFC is a kind of radiotechnics of short distance high frequency, and (RFID) and the technology that interconnects are recognized by non-contact radio-frequency
Integrate and develop, combining induction card reader, icah wavw and point-to-point function on one chip can be in short distances
It is interior to be identified and data exchange with compatible equipment.What NFC technique was utilized is the mutual coupling of inductance, and NFC antenna is each with card reader
From there is an inductance coil, we NFC antenna near corresponding card reader when, chip in NFC antenna is by its internal institute
On the coil of NFC antenna, its modulation principle is the impedance of regular change coil so as to regular to the modulates information of storage
Change inductance primary coil load, impedance of the card reader by detecting its internal inductance coil change rule, just can be with
Information in NFC antenna is read out, plays a part of information identification.In NFC technique, mutually two coils of idol inductance can be with
All it is active coil, such as two mobile phones, two active NFC coils now close to each other are responsible for communication function, play number
According to the effect for exchanging.
NFC technique is applicable to many scenes, such as near field payment, mass transit card, access card, ticket admission ticket, file transmission,
Interaction content, electronic business card, game pairings etc..Even if still as a transportation card can be applicable for it without electricity by mobile phone,
It can be as the various sensing cards in our hands, and passive activation carries out signal identification.In addition, NFC and traditional near field
Payment technology is compared, with natural security, and the rapidity for setting up connection.
With continuing to develop for science and technology, a large amount of popularizations of smart mobile phone and the quick upgrading of electronic equipment hardware, electricity
The performance of sub- equipment is being improved constantly, and the function of the mobile terminal such as mobile phone is also more and more, and NFC function has become high-end intelligence
The standard configuration of mobile phone.NFC function is built in mobile phone terminal, it is necessary to face various technical barriers.Produced in electronics such as mobile phones
Product require lightening today, certainly will have requirement very high to the thickness of NFC hardware modules, and NFC antenna operationally can in addition
Medium-high frequency magnetic field is produced, how to prevent operating fields from not consumed by the metal parts of interior of mobile phone or metal shell, prevent the magnetic
Field does not influence the work of interior of mobile phone electronic component, the power consumption of NFC is reduced, while preventing magnetic field signal from leaking to health
Have undesirable effect, improve the identification distance of NFC function, solve the screen flicker during NFC uses, these are just to NFC moulds
Antifreeze plate in group proposes requirement very high.
Soft magnetic ferrites being used in the market as antifreeze plate, however, Ferrite Material is very more at NFC coils the back
Difficulty is processed into laminar structure, and ferrite is processed into flake, is very easy to fragmentation leakage field.When NFC modules work,
Magnetic field penetrates readily through antifreeze plate and causes the problems such as discrimination is low, and mobile phone screen flashes, and using soft magnetic ferrites make every
The yield rate of magnetic sheet is low, high processing costs.In addition, ferritic magnetic saturation magnetic flux density is than relatively low, only 0.54T, if done
Must be than relatively thin, it is easy to reach magnetic field saturation, magnetic field penetration antifreeze plate is interfered to mobile phone internal component, and then is influenceed
The working environment of NFC.Under the NFC working frequencies of 13.56MHz, magnetic conductivity highest is only capable of reaching 150 ferrite antifreeze plate, is
The active channel that NFC operating fields are provided not is highly desirable, and there is the shortcomings of identification is insensitive, and shield effectiveness is poor.
Therefore, it is necessary to the antifreeze plate to being applied in NFC modules is improved.
The content of the invention
It is an object of the invention to provide it is a kind of for NFC module designs, magnetic conductivity is high, interference free performance is excellent every
Magnetic sheet.
To achieve these goals, the present invention is adopted the following technical scheme that：
A kind of NFC modules antifreeze plate, particularly, including magnetic flakes layer and heat dissipating layer；If magnetic flakes layer includes
The dry magnetic flakes being made up of metal soft magnetic material, the metal soft magnetic material is high-permeability material；Adjacent magnetic thin slice leads to
Binding agent is crossed to bond in the same direction；The heat dissipating layer is made up of heat sink material, and the side of the heat dissipating layer is by binding agent and magnetic flakes layer
Bond, opposite side is provided with the diaphragm for playing insulation protection.
Above-mentioned binding agent can be the binding agent of liquid or thin-film state, between each magnetic flakes, magnetic flakes layer with dissipate
Cementation is played between thermosphere.
Above-mentioned high-permeability material refers to that magnetic conductivity real part is in the range of 200~500 under conditions of 13.56MHz, magnetic
Material of the conductance imaginary part in the range of 10~50.
Above-mentioned heat dissipating layer can be thickness between 10~100 μm and thermal conductivity factor is the flexibility of 500~2000w/mk
Thin slice.
Principle of the invention is as follows：
Antifreeze plate of the invention, its magnetic flakes layer is made up of high-permeability material.Meet what is required in effective magnetic property
In the case of, the thickness of this magnetic flakes layer is greatly reduced compared to existing antifreeze plate, simultaneously as this magnetic flakes layer has
High magnetic permeability, this magnetic flakes layer can effectively shield the high-frequency electromagnetic of the mobile terminal such as mobile phone internal electronic component generation
Ripple, it is to avoid clutter is interfered to the working environment of NFC modules, and efficiently lead to for the operating fields of NFC modules provide one
Road, it is to avoid operating fields are interfered to other electronic components.This antifreeze plate sets the purpose of heat dissipating layer, then be able to
The heat produced in the NFC module courses of work is effectively conducted to the outside of the mobile terminals such as mobile phone, it is to avoid heat gathers to be made
Electronic equipment generates heat.Because the heat conductivility rate of exchange of graphite are excellent, the heat sink material for constituting heat dissipating layer can select graphite, graphite
Alkene film or the one side glue containing graphite content, are ensuring the heat that heat dissipating layer will timely and effectively can be collected in electronic equipment
While amount is distributed, the production cost of antifreeze plate is controlled.
In order to solve the problems that NFC modules occur during its use, insensitive, false triggering, shielding are such as recognized
Effect difference etc., magnetic flakes can be made up of the nanocrystalline strip with high magnetic permeability.This be described high magnetic permeability refer to
Under the magnetic field condition of 13.56MHz, the magnetic conductivity real part of the nanocrystalline strip is in the range of 200~500, magnetic conductivity imaginary part is 10
In the range of~50.The thickness of the nanocrystalline strip of individual layer only has 15~30 μm, when preparing magnetic flakes using nanocrystalline strip, work
People by the way of superposition, can gradually increase the thickness of magnetic flakes layer, improve magnetic property until the magnetic of magnetic flakes layer
The requirement of technological design can be met.Because the magnetic conductivity of nanocrystalline strip is very high, and nanocrystalline strip has saturation flux high
Density, therefore, the magnetic flakes layer being made up of nanocrystalline strip completely can be for the operating fields of NFC modules provide one more
Effective active channel, it is to avoid operating fields penetrate antifreeze plate and interfered to mobile phone internal electronic component, also can be effectively
Interference of the frequency electromagnetic waves of the electronic unit transmitting such as shielding CPU to the working environment of NFC modules.
Because the working frequency of NFC modules belongs to medium-high frequency, nanocrystalline strip easily produces larger in real work
Eddy-current loss, the normal of influence NFC modules is used.In order to avoid this case, nanocrystalline material can first pass through high temperature low-level oxidation
Treatment, in the case where product appearance is not influenceed, makes the surface of nanocrystalline strip form one layer of oxide-film of densification, so as to increase
The sheet resistance of nanocrystalline strip, and make nanocrystalline strip brittle.Then, the nanocrystalline strip by the treatment of high temperature low-level oxidation is same
To bonding, magnetic flakes layer is formed.Magnetic flakes layer can also carry out blocking treatment, make to form several in magnetic flakes layer
Tiny cell block.The fragmentation blocking treatment of high temperature low-level oxidation processing procedure and the magnetic flakes layer of nanocrystalline material can
In the reduction NFC module courses of work, the eddy-current loss that antifreeze plate causes by alternating magnetic field, and then improve the identification of NFC modules
Sensitivity, reduces maloperation.
Above-mentioned high temperature low-level oxidation treatment refers in vacuum nitrogen stove, nanocrystalline strip to be heat-treated, its heat treatment
Temperature in the range of 500 DEG C~650 DEG C, heat treatment time is in the range of 60~180min.Used in heat treatment process
Protective atmosphere can select nitrogen, and the nitrogen oxygen content preferably in the range of 1.2%~1.5%.
Said unitsization treatment refers to, using the steel rider extruding nanocrystalline strip with reticulate structure, to make composition magnetic flakes
Each nanocrystalline strip fragmentation of layer, forms several tiny cell blocks, i.e., tiny thin slice fragment, meanwhile, binding agent is in machine
Under tool pressure, penetrate into each unit block between gap in and wrap up each unit block, each unit block is provided with insulation effect, effectively
Nanocrystalline strip is avoided to form larger vortex in use.
In blocking treatment, nanocrystalline strip maintains overall structure by binding agent, makes the layer of the magnetic flakes after blocking
Still can in appearance keep overall structure.And after being processed through blocking, each tiny cell block (i.e. each thin slice of magnetic flakes layer
Fragment) size range in the range of 1 μm~5cm, to ensure that each thin slice fragment can effectively reduce antifreeze plate in use
Eddy-current loss.The outline of cell block can be circular, or square.The outer contour shape of cell block and the net of steel rider
Line structure is related.When the outline of cell block is rounded, above-mentioned size range is the diameter range of cell block；Outside cell block
When profile is square, above-mentioned size range is the wide scope long of cell block.
To produce above-mentioned NFC modules antifreeze plate, the present invention also provides the manufacture method of NFC module antifreeze plates, including
Following steps：
A the magnetic conductance piece high of several structures in the form of sheets) is made of the metal soft magnetic material of high magnetic permeability；
B the side of any high magnetic permeability piece) is covered with binding agent, one piece of magnetic flakes is formed；This step is repeated, until magnetic
The quantity N of property thin slice meets design requirement, N >=1；
C) to quantity for the magnetic flakes of N are bonded in the same direction, magnetic flakes layer is formed；Cover the side of magnetic flakes layer
Binding agent is stamped, opposite side is exposed surface；
D the fin of structure in the form of sheets) is made of heat sink material, and the side of fin is covered with binding agent, formed and dissipated
Thermosphere；The side of the heat dissipating layer is coated with binding agent, and opposite side is exposed surface；
E) side that heat dissipating layer is coated with binding agent is bonded in the exposed surface of magnetic flakes layer；
F) exposed surface in fin has pasted the diaphragm of insulation protection effect, is made antifreeze plate.
Above-mentioned steps B~C and step D is without particular order.
The magnetic conductance piece high of above-mentioned structure in the form of sheets can be hardness sheet shaped piece higher or the relatively low coiled material of hardness.
It refers to that any magnetic flakes are not covered with the side of binding agent and another magnetic that above-mentioned magnetic flakes bond in the same direction
The side that property thin slice is coated with binding agent mutually bonds；After all magnetic flakes are bonded in the same direction, magnetic flakes layer outermost and not
The side of binding agent, as exposed surface are coated with, and opposite side is the side for being coated with bonding agent.
To reduce antifreeze plate eddy-current loss in use, in above-mentioned manufacture method, step A can use following mistakes
Journey：The metal soft magnetic material of high magnetic permeability selects nanocrystalline strip；High temperature low-level oxidation treatment is carried out to nanocrystalline strip, nanometer is made
The surface of crystal zone material forms layer oxide film；Nanocrystalline strip after being processed with high temperature low-level oxidation is made several structures in the form of sheets
Magnetic conductance piece high.
In above-mentioned steps, it refers in vacuum nitrogen stove, to nanocrystalline that the treatment of high temperature low-level oxidation is carried out to nanocrystalline strip
Band is heat-treated, and preferably in the range of 500 DEG C~650 DEG C, process time is preferably at 60 minutes~180 points for its temperature range
In the range of clock；Protective atmosphere can select nitrogen, and the nitrogen oxygen content preferably in the range of 1.2%~1.5%.
Additionally, step G can be increased after step C：Blocking treatment is carried out to magnetic flakes layer.In step G, to magnetic
Property lamella carry out blocking treatment refer to：By magnetic flakes layer feeding unit machine in, by unit machine cooperate pressure
Roller and smooth roll, attrition crushing treatment is carried out to magnetic flakes layer, makes each nanocrystalline strip fragmentation of composition magnetic flakes layer, is formed
Several tiny cell blocks, i.e., tiny thin slice fragment, meanwhile, binding agent under mechanical stress, is penetrated between each unit block
Gap in and wrap up each unit block, so as to make each unit block be provided with insulation effect.
Above-mentioned pressure roller is the steel rider with reticulate structure, and its reticulate pattern can be arbitrary shape, and the edge of reticulate pattern should be knife
Bladed or reticulate pattern are particle overshooting shape or frosted shape, to shred magnetic flakes layer.Fragmentation haploidization can complete magnetic
Carried out after the completion of lamella laminating, it is overall to magnetic flakes layer to carry out sequential cells treatment, it is ensured that the performance of product.
In above-mentioned manufacture method, all material can select coiled material, and its operating process can use retractable volume mode
Make, cost of labor is substantially reduced, it is to avoid the waste of material, while avoiding personnel's directly contact product, it is ensured that product appearance.
There is the present invention simple structure, excellent performance, antifreeze plate magnetic conductivity and quality factor to significantly improve, production process letter
It is single convenient, ensure that antifreeze plate in use can be good it is scattered good the advantages of.
Brief description of the drawings
Fig. 1 is the schematic diagram of antifreeze plate in the embodiment of the present invention 1；
Fig. 2 is the schematic diagram of cell block in the embodiment of the present invention 1；
Fig. 3 is the schematic diagram of antifreeze plate in the embodiment of the present invention 2；
Fig. 4 is the schematic diagram of magnetic flakes blocking treatment in the embodiment of the present invention 3.
Description of reference numerals：1- magnetic flakes layer；2- heat dissipating layers；3- magnetic flakes；4- binding agents；5- fin；6- is protected
Cuticula；7- mould release membrances；8- steel riders；9- smooth rolls；10- cell blocks.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples.
Embodiment 1：
NFC module antifreeze plates as shown in Fig. 1~2, the antifreeze plate is made up of magnetic flakes layer 1, heat dissipating layer 2, wherein,
Magnetic flakes layer 1 is made up of one piece of magnetic flakes 3, and the magnetic flakes 3 are made up simultaneously of the metal soft magnetic material of high magnetic permeability
The magnetic conductance piece of structure in the form of sheets；One side surface of the magnetic conductance piece is exposed surface (being not covered with bonding agent), on another side surface
It is coated with the double faced adhesive tape as binding agent 4；Heat dissipating layer 2 is made up of one piece of fin 5, and the fin 5 is made from heat sink material；
One side surface of fin 5 is coated with the double faced adhesive tape as binding agent 4, and opposite side has diaphragm 6 by the adhesion of binding agent 4, and
Fin 5 is coated with the side of double faced adhesive tape and is bonded on the exposed surface of magnetic flakes 3 by double faced adhesive tape.Magnetic flakes layer 1 is covered
The side for having binding agent 4 is additionally provided with mould release membrance 7, and the binding agent 4 for protecting magnetic flakes layer 1 is exempted from brokenly when being not used by
It is bad.Mould release membrance 7 can be removed when antifreeze plate is used by user.
Due to processing the nanocrystalline strip for obtaining, under the working environment in 13.56MHz, its magnetic conductance through high temperature low-level oxidation
Rate real part falls completely within 200~500 scope, and its magnetic conductivity imaginary part falls completely within 10~50 scope, therefore, the present embodiment 1
In, the metal soft magnetic material of high magnetic permeability processes the nanocrystalline strip for obtaining from by high temperature low-level oxidation.
Nanocrystalline strip mentioned here can be Fe bases, Co bases or Ni base nanometer crystal bands, and the nanocrystalline strip
Thickness in monolayer should be in 15~30 μ ms.Because the nanocrystalline strip of Fe bases is minimum relative to Co bases and Ni base band material costs,
In the present embodiment 1, nanocrystalline strip is from the Fe base nanometer crystal bands that thickness in monolayer is 20 μm.
The treatment of high temperature low-level oxidation refers to then in vacuum nitrogen stove, nanocrystalline strip to be heat-treated, its heat treatment
In the range of 500 DEG C~650 DEG C, heat treatment time is in the range of 60~180min for temperature.In the present embodiment 1, to nanocrystalline band
The temperature that material is heat-treated is 600 DEG C, and heat treatment time is 100min.
Additionally, the nanocrystalline strip of the present embodiment 1 in the bottom of nanocrystalline strip by after the treatment of high temperature low-level oxidation, covering
After lid double faced adhesive tape, that is, obtain magnetic flakes layer 1.Then, magnetic flakes layer 1 can also carry out blocking treatment, to reduce every magnetic
The eddy-current loss that piece is operationally produced.Blocking treatment refers to extrude nanocrystalline strip using the steel rider with reticulate structure,
Make nanocrystalline strip fragmentation, form several tiny cell blocks 10, meanwhile, double faced adhesive tape under mechanical stress, penetrates into each unit
In gap between block 10 and each unit block 10 is wrapped up, each unit block 10 is provided with insulation effect.And due to magnetic flakes layer 1
Bottom be coated with double faced adhesive tape, and in blocking processing procedure, double faced adhesive tape can't be fractured, therefore, at blocking
After reason, magnetic flakes layer 1 can still keep overall structure in appearance.Additionally, through blocking process after, magnetic flakes layer 1 it is each
The size of cell block should be in the range of 1 μm~5cm.The specific size of each unit block is set depending on the squeezing effect of steel rod, each list
The size of first block need to be only fallen into the range of 1 μm~5cm, the specific size without directly limiting each unit block.
In the present embodiment 1, fin 5 is flexible flake, and the heat sink material for being made fin 5 then selects graphene film.
When the thickness of graphene film is between 10~100 μm, its heat-conducting system is fallen into the range of 500~2000w/mk, is complied fully with
The design requirement of this antifreeze plate.In order to ensure the radiating effect of heat dissipating layer 2, in the present embodiment 1, the thickness of heat dissipating layer 2 is 50 μm.
In the present embodiment 1, diaphragm 6 is made up of insulating materials, and such as PE (polyethylene) or PET (polyester film) or PP are (poly-
Propylene film) etc. resinae material.Diaphragm 6 is bonded on heat dissipating layer 2, the thickness of diaphragm 6 in 25 μm~75 μ ms compared with
For suitable.When antifreeze plate is used, diaphragm 6 can be removed by user.
In the present embodiment 1, binding agent 4 selects double faced adhesive tape.Double faced adhesive tape can select rule of the thickness range in 1 μm~100 μm
Lattice, preferably from the thin-film state double faced adhesive tape without base material that thickness is 3 μm.As illustrated, in the present embodiment 1, magnetic flakes layer 1
Bottom is binding agent 4, i.e. double faced adhesive tape, and mould release membrance 7 is provided with double faced adhesive tape.The top of magnetic flakes layer 1 and heat dissipating layer 2
Bottom is bonded by double faced adhesive tape, and the bottom of heat dissipating layer 2 is binding agent 4, i.e. double faced adhesive tape, and the top of heat dissipating layer 2 is then pasted
Conjunction has diaphragm 6.
The antifreeze plate being made up of above-mentioned magnetic flakes layer 1, heat dissipating layer 2, diaphragm 6, its thickness is in 35 μm~5000 μm models
In enclosing, the frequency that it is used is 50KHz~1GHz.
Embodiment 2：
The present embodiment 2 is with the difference of embodiment 1, in the present embodiment 2, as shown in figure 3, magnetic flakes layer 1 by
Two magnetic flakes 3 are constituted, and two neighboring magnetic flakes 3 are bonded in the same direction by binding agent 4, i.e. double faced adhesive tape：Any magnetic flakes 3
The side that the side for being not covered with binding agent 4 is coated with binding agent 4 with another magnetic flakes 3 mutually bonds.Now, magnetic flakes
The bottom of layer 1 is still binding agent 4 and release liners, and heat dissipating layer 2 to remain unchanged and be adhered to the exposed of magnetic flakes layer 1 by bonding agent
Face.
Embodiment 3：
To manufacture the antifreeze plate of embodiment 1, the present embodiment 3 uses following step：
A the Fe base nanometer crystal bands that thickness in monolayer is 20 μm and the graphene film that thickness is 50 μm) are selected as preparation
The material of antifreeze plate；The PE films that thickness in monolayer is 50 μm are remained to use as the diaphragm 6 of this antifreeze plate；
B coiled nanocrystalline strip) is carried out into high temperature low-level oxidation heat treatment；In high temperature low-level oxidation heat treatment process, receive
The heat treatment temperature of rice crystal zone material is 600 DEG C, and the time of heat treatment is 100min, and heat treatment process is complete using vacuum nitrogen stove
Into protective atmosphere is nitrogen, and the oxygen content of nitrogen is 1.2%；The nanocrystalline strip obtained after being heat-treated through high temperature low-level oxidation, its
Surface can be formed with layer oxide film；
C the nanocrystalline strip after) being heat-treated through high temperature low-level oxidation is arranged on make-up machine, then, by double faced adhesive tape side
Release liners peel off and be pasted onto the side of nanocrystalline strip, obtain magnetic flakes layer 1；The double faced adhesive tape opposite side still remain with from
Type paper, destruction is exempted from when being not used by with the binding agent 4 for protecting magnetic flakes layer 1；In this step, double faced adhesive tape is from thickness
3 μm of the thin-film state double faced adhesive tape without base material, with convenient to operate；
D) magnetic flakes layer 1 is arranged in unit machine, in unit machine, steel rider 8 with reticulate structure and to it is right
The smooth roll answered carries out blocking treatment to magnetic flakes layer 1：As shown in figure 4, the not glued side for having a double faced adhesive tape of magnetic flakes layer 1
Towards the steel rider 8 with reticulate structure, the steel rider 8 is provided with reticulate pattern, and the planform of reticulate pattern can be chosen by design requirement, net
The edge of line is in blade-like；Magnetic flakes layer 1 is bonded with the side of double faced adhesive tape then towards smooth roll 9；Magnetic flakes layer 1 passes through steel rider
When 8, steel rider 8 is extruded magnetic flakes layer 1 immediately, makes each nanocrystalline strip fragmentation, forms several tiny cell blocks
10；Now, the top of magnetic flakes layer 1 is exposed surface, and bottom is the double faced adhesive tape for remaining with release liners；Processed through blocking
Nanocrystalline strip afterwards is the magnetic flakes layer 1 of the antifreeze plate of the present embodiment 3, and magnetic flakes layer 1 is by 1 piece of structure of magnetic flakes 3
Into N=1；
E) coiled graphene film is arranged on make-up machine, then, the release liners of double faced adhesive tape side is peeled off and pasted
In the side of nanocrystalline strip, the heat dissipating layer 2 of antifreeze plate is obtained；In this step, double faced adhesive tape opposite side still remains with release liners, with
The binding agent 4 of protection magnetic flakes layer 1 exempts from destruction when being not used by；In this step, double faced adhesive tape is from the nothing that thickness is 3 μm
The thin-film state double faced adhesive tape of base material, with convenient to operate；
F the release liners that) will be bonded in the double faced adhesive tape of the side of heat dissipating layer 2 are peeled off, and are pasted heat dissipating layer 2 using double faced adhesive tape
Magnetic flakes layer 1 the top, will heat dissipating layer 2 by binding agent 4 paste magnetic flakes layer 1 exposed surface on；G) will protect
Cuticula 6 is fitted in the top of heat dissipating layer 2, i.e. heat dissipating layer 2 by double faced adhesive tape and is not bonded the side of double faced adhesive tape, so as to form this
The diaphragm 6 of antifreeze plate；
H) according to needed for size shape, cut or die-cutting step G obtained by product, be made NFC module antifreeze plates.
Embodiment 4：
To manufacture the antifreeze plate of embodiment 2, the present embodiment 4 uses following step：
A the Fe base nanometer crystal bands that thickness in monolayer is 20 μm and the graphene film that thickness is 50 μm) are selected as preparation
The material of antifreeze plate；The PE films that thickness in monolayer is 50 μm are remained to use as the diaphragm 6 of this antifreeze plate；
B the nanocrystalline strip of volume two) is carried out into high temperature low-level oxidation heat treatment；In high temperature low-level oxidation heat treatment process, receive
The heat treatment temperature of rice crystal zone material is 600 DEG C, and the time of heat treatment is 100min, and heat treatment process is complete using vacuum nitrogen stove
Into protective atmosphere is nitrogen, and the oxygen content of nitrogen is 1.2%；The nanocrystalline strip obtained after being heat-treated through high temperature low-level oxidation, its
Surface can be formed with layer oxide film；
C) nanocrystalline strips of volume two after being heat-treated through high temperature low-level oxidation are separately mounted on make-up machine, then, will be double
The release liners of face glue side are peeled off and are pasted onto the side of nanocrystalline strip；Double faced adhesive tape opposite side still remains with release liners, to protect
The binding agent 4 of shield magnetic flakes layer 1 exempts from destruction when being not used by；In this step, double faced adhesive tape is 3 μm without base from thickness
The thin-film state double faced adhesive tape of material, with convenient to operate；
D) nanocrystalline strip that volume two paste double faced adhesive tape is bonded in the same direction：Wherein a roll of nanocrystalline strip is not covered
The side that the side for being stamped binding agent 4 is coated with binding agent 4 with another volume nanocrystalline strip mutually bonds, and obtains this antifreeze plate
Magnetic flakes layer 1；Now, the bottom of magnetic flakes layer 1 is still binding agent 4 and release liners；
E) magnetic flakes layer 1 is arranged in unit machine, in unit machine, steel rider 8 with reticulate structure and to it is right
The smooth roll 9 answered carries out blocking treatment to magnetic flakes layer 1：As illustrated, the not glued side for having a double faced adhesive tape of magnetic flakes layer 1
Towards the steel rider 8 with reticulate structure, the steel rider 8 is provided with reticulate pattern, and the planform of reticulate pattern can be chosen by design requirement, net
The edge of line is in blade-like；Magnetic flakes layer 1 is bonded with the side of double faced adhesive tape then towards smooth roll 9；Magnetic flakes layer 1 passes through steel rider
When 8, steel rider 8 is extruded magnetic flakes layer 1 immediately, makes each nanocrystalline strip fragmentation, forms several tiny cell blocks
10；Now, the top of magnetic flakes layer 1 is exposed surface, and bottom is the double faced adhesive tape for remaining with release liners；Processed through blocking
Nanocrystalline strip afterwards is the magnetic flakes layer 1 of the antifreeze plate in embodiment 2, and magnetic flakes layer 1 is by 2 pieces of magnetic flakes 3
Constitute, N=2；
F) coiled graphene film is arranged on make-up machine, then, the release liners of double faced adhesive tape side is peeled off and pasted
In the side of nanocrystalline strip, the heat dissipating layer 2 of antifreeze plate is obtained；In this step, double faced adhesive tape opposite side still remains with release liners, with
The binding agent 4 of protection magnetic flakes layer 1 exempts from destruction when being not used by；In this step, double faced adhesive tape is from the nothing that thickness is 3 μm
The thin-film state double faced adhesive tape of base material, with convenient to operate；
G the release liners that) will be bonded in the double faced adhesive tape of the side of heat dissipating layer 2 are peeled off, and are pasted heat dissipating layer 2 using double faced adhesive tape
Magnetic flakes layer 1 the top, will heat dissipating layer 2 by binding agent 4 paste magnetic flakes layer 1 exposed surface on；
H) diaphragm 6 is fitted in the top of heat dissipating layer 2, i.e. heat dissipating layer 2 by double faced adhesive tape and does not bond double faced adhesive tape
Side, so as to form the diaphragm 6 of this antifreeze plate；
I) according to needed for size shape, cut or die-cutting step H obtained by product, be made NFC module antifreeze plates.
Know-why of the invention is described above in association with specific embodiment.These descriptions are intended merely to explain of the invention
Principle, and can not by any way be construed to limiting the scope of the invention.Based on explanation herein, the technology of this area
Personnel associate other specific embodiments of the invention by would not require any inventive effort, these modes fall within
Within protection scope of the present invention.
Claims (10)
1. a kind of NFC modules antifreeze plate, it is characterised in that：Including magnetic flakes layer and heat dissipating layer；The magnetic flakes layer bag
Several magnetic flakes being made up of metal soft magnetic material are included, the metal soft magnetic material is high-permeability material；Adjacent magnetic
Thin slice is bonded in the same direction by binding agent；The heat dissipating layer is made up of heat sink material, the side of the heat dissipating layer by binding agent with
Magnetic flakes layer is bonded, and opposite side is provided with the diaphragm for playing insulation protection.
2. Digitizing plate antifreeze plate according to claim 1, it is characterised in that：The metal soft magnetic material is with magnetic high
The nanocrystalline strip of conductance.
3. Digitizing plate antifreeze plate according to claim 1 and 2, it is characterised in that：Constituting the heat sink material of heat dissipating layer is
Graphite or graphene film or the one side glue containing graphite content.
4. Digitizing plate antifreeze plate according to claim 2, it is characterised in that：The nanocrystalline strip is micro- by high temperature
Oxidation processes and surface are formed with the nanocrystalline strip of layer oxide film；The magnetic flakes layer is processed by by high temperature low-level oxidation
Nanocrystalline strip bond in the same direction, and by blocking process, be formed with the magnetic flakes of several cell blocks in therein
Layer.
5. Digitizing plate antifreeze plate according to claim 4, it is characterised in that：After being processed through blocking, magnetic is formed at
The size range of each unit block in lamella is in the range of 1 μm~5cm.
6. Digitizing plate antifreeze plate according to claim 4, it is characterised in that：The heat treatment of the high temperature low-level oxidation treatment
In the range of 500 DEG C~650 DEG C, heat treatment time is in the range of 60~180min for temperature；Used in heat treatment process
Protective atmosphere is nitrogen, and the nitrogen oxygen content in the range of 1.2%~1.5%.
The manufacture method of 7.NFC module antifreeze plates, it is characterised in that：Comprise the following steps：
A the magnetic conductance piece high of several structures in the form of sheets) is made of the metal soft magnetic material of high magnetic permeability；
B the side of any high magnetic permeability piece) is covered with binding agent, one piece of magnetic flakes is formed；This step is repeated, until magnetic is thin
The quantity N of piece meets design requirement, N >=1；
C) to quantity for the magnetic flakes of N are bonded in the same direction, magnetic flakes layer is formed；The side of magnetic flakes layer is coated with
Binding agent, opposite side is exposed surface；
D the fin of structure in the form of sheets) is made of heat sink material, and the side of fin is covered with binding agent, form heat dissipating layer；
The side of the heat dissipating layer is coated with binding agent, and opposite side is exposed surface；
E) side that heat dissipating layer is coated with binding agent is bonded in the exposed surface of magnetic flakes layer；
F) exposed surface in fin has pasted the diaphragm of insulation protection effect, is made antifreeze plate.
8. the manufacture method of Digitizing plate antifreeze plate according to claim 7, it is characterised in that：In step, the height
The metal soft magnetic material of magnetic conductivity is nanocrystalline strip；Step A is further comprising the steps of：The micro- oxygen of high temperature is carried out to nanocrystalline strip
Change is processed, and makes the surface of nanocrystalline strip form layer oxide film；If the nanocrystalline strip after being processed with high temperature low-level oxidation is made
The magnetic conductance piece high of dry individual structure in the form of sheets.
9. the manufacture method of Digitizing plate antifreeze plate according to claim 8, it is characterised in that：In step, the height
In the range of 500 DEG C~650 DEG C, the heat treatment process time was at 60 minutes~180 minutes for the heat treatment temperature of warm low-level oxidation treatment
In the range of；Protective atmosphere is nitrogen, and the nitrogen oxygen content in the range of 1.2%~1.5%.
10. the manufacture method of Digitizing plate antifreeze plate according to claim 9, it is characterised in that：Increase step after step C
Rapid G：Blocking treatment is carried out to magnetic flakes layer.
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| CN201710205357.7A CN106876084B (en) | 2017-03-31 | 2017-03-31 | A kind of NFC mould group antifreeze plate and its manufacturing method |
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| CN201710205357.7A CN106876084B (en) | 2017-03-31 | 2017-03-31 | A kind of NFC mould group antifreeze plate and its manufacturing method |
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| CN106876084B CN106876084B (en) | 2019-05-14 |
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| CN108447643A (en) * | 2018-05-30 | 2018-08-24 | 上海安费诺永亿通讯电子有限公司 | A kind of magnetic shield piece |
| CN109530522A (en) * | 2018-12-05 | 2019-03-29 | 苏州达翔新材料有限公司 | A kind of moulding process |
| CN109640609A (en) * | 2018-11-21 | 2019-04-16 | 江苏斯瑞达新材料科技有限公司 | A kind of magnetic shield piece and its processing method |
| CN109788729A (en) * | 2018-12-29 | 2019-05-21 | 上海威斯科电子材料有限公司 | A kind of manufacturing method being electromagnetically shielded piece |
| CN110335748A (en) * | 2019-07-25 | 2019-10-15 | 东莞市鸿亿导热材料有限公司 | A kind of magnetic flakes and preparation method thereof based on amorphous or nanocrystalline strip |
| CN111863378A (en) * | 2020-07-28 | 2020-10-30 | 安徽智磁新材料科技有限公司 | Soft magnetic particle film with high-temperature magnetic stability and preparation method thereof |
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